Speaker
Toni Bertolez-Martinez
(University of Wisconsin-Madison)
Description
Speaker: Toni Bertolez-Martinez
Abstract: In this talk, we will understand the physical effects that neutrino masses have in cosmological observables, and through which measurements cosmological observations place the most stringent bounds on neutrino masses as of today. Then, I will show how CMB bounds can be relaxed not only by a different assumption on the cosmological model, but by non-standard properties of the neutrino sector. At a time when observations point towards "negative neutrino masses" and evolving dark energy, we require a framework which allows to quantify which properties of neutrinos in cosmology we are actually measuring.